Shifting Control Strategy Study Of Electrical Controlled Automatic Mechanical Transmission System

Process analysis of Gear-shift in Vehicle with Automatic Mechanical Transmission System and the shifting law conditioned on special road and intention of driver are prime study content in this paper. The study aims to realize clutch combined control in the process of shifting and build up the modified shifting law on special conditions, which will help to realize integrated shifting control of Automatic Mechanical Transmission System on complicated conditions. In this paper, focused on shifting control law of ATM system, study on SC7130 is put forward as follows: 1. The structure and principle of Automatic Mechanical Transmission shifting control System is introduced, and the history and status at home and abroad is summarized. On the basis of the research and conclusion, the study content and related key problems of AMT is analyzed, and the content and flow of this paper is confirmed. 2. Based on the Performance Testing of JL474Q1 engine, according to the existing theory, general shifting law of the power and economy performance is developed. Demerits to the power performance found in analysis are modified. 3. On the basis of shifting analysis, affection factor of shifting quality and control ways are analyzed, and simulation model of Clutch combined control in shifting is built up. Simulation study and result analysis are developed on clutch control of shifting, which establish foundation for integrated control of shifting law. 4. Under the background of intellectualized shifting control theory, aiming at the condition of road and drivers'intention, existing shifting law is modified accordingly, modified shifting law in the certain situation is gained, and Simulation study and result analysis about shifting law are put forward. 5. Following the analysis on intellectualized shifting control system, integrated control shifting system is designed, integrated shifting emulation model is set up, and parameters of Simulation Environment are designed, simulation study and result analysis about integrated control of shifting under combined conditions are developed.